The official Japanese Pokémon TCG website has announced a new promo campaign to distribute Special Art promo cards. Players that buy 2 boxes (60 packs) of the expansion pack Silver Lance can get a Sadaija V Special Art promo card. Players that buy 2 boxes (60 packs) of the expansion pack Jet-Black Spirit will receive the Celebi V Special Art promo card. The campaign period starts on April 23rd, 2021 and the cards will be available while supplies last at participating stores in Japan.

Sadaija V (サダイジャV) Ability: Sand Wall - This Pokemon takes 30 less damage from attacks. Move: Land Crush - 140 Damage	Celebi V (セレビィV) Move #1: New Leaf Dance - Attach any number of Grass Energy from your hand to your Pokemon in any way you like. Move #2: Slash Back - Switch this Pokemon with 1 of your Benched Pokémon. 60 Damage

Source: https://www.pokemon-card.com/info/2021/20210402_002856.html